10 Causes of Sinus Infection
Reviewed: Dr. Mera
Cause #3: Nasal Polyps
Nasal polyps are noncancerous growths within the lining of the nasal passage or sinuses. They are soft and not painful, usually hanging down as teardrops or grapes. Nasal polyps develop as a result of chronic inflammation because of immune disorders, allergies, recurrent infections, asthma, and drug sensitivity.
Nasal polyps can vary in size. While small nasal polyps may not cause any signs and symptoms, large nasal polyps may block the normal nasal passage, leading to various problems including breathing problems, frequent upper respiratory tract infections, and a loss of the sense of smell. Nasal polyps occurring on the nose or in the sinuses can both cause a sinus infection.
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